Pittsburgh used a potent running attack and Gary Anderson kicked three first-half field goals as the Steelers breezed to a 30-14 exhibition victory over the New England Patriots in Montreal last night.

The game, part of the NFL's American Bowl '90 series of exhibitions in foreign cities, drew only 26,869 fans to the 60,011-seat Olympic Stadium.

The Patriots, under first-year head coach Rod Rust who was the Steelers' defensive coordinator last season, struggled in implementing their new offensive system. In the first half, they were held to minus-2 yards rushing, had only four first downs, all by passing, and were outgained by the Steelers in total yards, 205-51.

Anderson converted the first of his field goals with 8:04 left in the first quarter, a 33-yarder to cap a nine-play, 40-yard drive on Pittsburgh's first possession.

A fumble by Mosi Tatupu on the Patriots' first possession of the second quarter set up Pittsburgh's second score. Third-year running back Warren Williams carried four times for 25 yards in the seven-play, 40-yard drive, including the last seven yards with 10:01 left in the half for a 10-0 lead.

Anderson, who had missed a 49-yard field goal attempt in the first quarter and had a 27-yarder blocked later, hit a 47-yarder with 3:04 left and a 25-yarder as time expired to give Pittsburgh a 16-0 lead at intermission.

Lions 34, Oilers 10:

Detroit used a versatile scoring attack, including a 23-yard interception return by Terry Taylor and Mel Gray's 73-yard punt return, in an exhibition victory in Houston.

Detroit, which won its final five games last season, dominated the battle of the run-and-shoot offenses, taking a 24-7 halftime lead.

Detroit's defense swarmed Warren Moon, who completed all four of his passes for 57 yards, but was sacked three times for losses totaling 24 yards.